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Letters Patent No. 78,397, dated May 26, 1868. l

IMPROVED SPRING-BED BoTToM.

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To WHOM -IT MAYJCONCERN:

Know all men'that we, ALVAH L. SAWYER, and WiLSON BALDWIN, of Detroit,rii the county of' Wayne, and State of Michigan, have invented a.v new and useful Improvement in Spring-Bed Bottoms; and we do declare that lthe following is a true and accurate description thereo'reference being had to the accompanying drawings, unil-tothe letters of reference marked thereon, and being c part of' this speciication.

,This invention consists in` so zirrangingiel series of transverse and longitudinal bars as vto produce a. strong,

compact, elastic, andeconomical bed-bottom.

Figure 1 is a perspective View of'our invention, Aand Figure A2 a. transverse sectional view on*l the .line :vm-in iig. 1.v

vThe snmelettels lreferto like partsineach figure.

" We use two transverse bars, A.A,to w'h'ichiwe attach the longitudinclibars B B. Upon these latter-named bars,` and` a'bout equidistant from Atheir ends, -weplcce the flcrnm-blocks C (l C C, end in the centre We place,l the crotclied'spring D, extending transversely between the bars IB. Then we fasten to the topoiv the blocks (I) I and c'rotched spring Dother longitudinal bars, lE E, which areslsoattached at their ends to transverse bars F F, which'sustain the slatsH H H, 3io.4

These bed-bottoms cnnv'be made ofi'smy suitablesi'ze, and from any suitable materiel.

What we claim es our invention, and desire to secure by Letters Patent, is-s 'The combination of the transverse bars A A and F F, the longitudinal bars BB and .E E, with the f ulcrumblocks C C C C, the crmched transverse spring D,land `the slats'-H H H, itc., when constructed, arranged, and operating substantially as herein set forth and shown.

` ALVAH L. SAWY-ER,

` WILSON BALDWIN.

Witnesses;

J. W. Hoven-mtrv,` H. SSPRAGUE. 

